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Financial Risk Management - Schedule of Capital Objectives-Related Information (Detail) - SEK (kr) kr in Billions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023
Disclosure Of Capital Objectives Related Information [Line Items] |  |
Free cash flow before M&A as % of net sales 1) | 16.20% | (0.40%)
Positive net cash (SEK billion) | kr 37.8 | kr 7.8
Moody's [member] | External credit grades [member] |  |
Disclosure Of Capital Objectives Related Information [Line Items] |  |
Credit rating and outlook | Ba1, stable | Ba1, stable
SP Global [Member] | External credit grades [member] |  |
Disclosure Of Capital Objectives Related Information [Line Items] |  |
Credit rating and outlook | BBB–, stable | BBB–, developing
Fitch Ratings [member] | External credit grades [member] |  |
Disclosure Of Capital Objectives Related Information [Line Items] |  |
Credit rating and outlook | BBB–, stable | BBB–, stable

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